Improvement in hooks for dumping tubs



duidt %tde5 atmi @ffice Lettere Petent No. 109,274, deted November i5, 1870.

IMPROVEMENT IN HOOKS FOR DUMPING TUBS.

The Schedule referred to in -'these Letters Patent and making'part: of the same.

To all whom it may concern Be it known that I, JOHN It. Tricase, of Waldoborough, in the county of Lincoln and State of Maine, have invented a new and useful Improved Hook for Dumping a Scale; rand I do hereby declare the following to be a full, clear, and exact description of the saine, which will enable others to make and use my invention, reference being had to the accompanying drawing forming part of this specication, in which- Figure l shows a side elevation of my invention attached' to the devicewith which it operates.

Figure 2- shows the hookl when released or uncaught.

My invention relates-to a hook or device to b'e cmployed in certain kinds of work to release or deposit the load at a cert-ain point when the load is elevated inthe air. It is to he used in excavations and iillings, to deposit soil, rocks, Sac., which are raised from-their bed, swung around by a derriok, and then dropped at the desired point.

In the drawinga shows the receptacle for the earth or rock.

b, the ropes or chains by which the same is suspeuded.

Whep filled the receptacle t is raised by a derrick, or other device, and then swung around, as common, to the desiredpoint, when the hook is unloosed and the receptacle, by tipping or dropping, discharges its load.

The hook may be thus described:

.e is the stock. f

d, the ring in the stock, to receive the cord b', which is attached to the ring d', to which the' several cords attached to the receptacle a are united, as illustrated.

The ring d is pivoted to the stock e, as shown.

The hook and its stock is seen at c,'the hook part entering a ring, or other deviee,in or on the receptacle a. (See f.)

.h is an arm pivoted to the stock e, at t, and having the piece j, to receive 4the spring k, attached to the stock m is a pivoted ring in the end of the arm h.

The stock of the hook c is pivoted to the stock e, attr, in a slot between two ears rising from the lower end of e, so that the hook may drop down, as seen in tig. 2.

It has aslot or opening to receive the upper end of c, as illust-rated in iig. l.

' The spring 7.; holds the arln h in place, and replaces it when it is drawn upto allow the stock e to drop, as in fig. 2.

A cord is attached to the ring in h, and passes up over -a she-are or pulley at some point above the hook, 'wherever is convenient, either in the derricii or elsewhere..

When the table or receptacle' a is swung around to its position, the end of this cord, attached to the ring m in the arni h, is pulled up, and thus the upper end ot' c released, when, by the weight of the article or articles in the receptacle a, the hook is pulled down, as seen in iig. 2, and one side of z t'dropped down, so that it is left suspended only from rings o, and thus the load is discharged.

When the operation of reloading c begins the part c is drawn up, so as to enter the slot in h, and the hook is again entered in the ringf.

That I claim as my invention, and desire to secure by Letters Patent, is- A f The combination of the steek c, ring d, arm It, ring tu, piece j, pivot i, spring It, stock and hook c, pivot fn., and ring j; as and for the purposes herein set forth.

JOHN R. THOR-NE. Witnesses:

WM. HENRY CLIFFORD. HENRY G. HOUSTON. 

